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How to Fix Microsoft Bookings Error 500 and Redirect Loops

Maira Mehtab Oct 9, 2026 870 views

Question details

Users are experiencing an Error 500 and redirect loops when trying to sign into Microsoft Bookings.

How to Fix Microsoft Bookings Error 500 and Redirect Loops

Product: Microsoft Bookings
Device & OS: not provided
Scenario: Signing into Microsoft Bookings
Observed behavior: The sign-in process fails with an Error 500 ('something went wrong') and the page repeatedly redirects without granting access.

Before you start

Ensure you have your Microsoft account credentials handy, as you will need to sign in again after clearing your browser data.

Solution 1Recommended

Clear Browser Cache and Try a Different Browser

Clearing outdated or corrupted browser data resolves most redirect loops and server error 500 issues during sign-in.

Authentication tokens can sometimes become corrupted or mismatched, causing the Microsoft server to reject the login request and throw a 500 error.

Open browser settings

Navigate to the privacy, security, or history section of your current web browser.

Clear browsing data

Select the option to clear browsing data, ensuring that both 'Cookies and other site data' and 'Cached images and files' are checked before confirming.

Close and relaunch

Close all active browser windows and sessions to ensure the cache is fully cleared, then relaunch the browser.

Sign in again

Go back to the Microsoft Bookings page and attempt to sign in. If the issue persists, try using a completely different supported web browser such as Edge, Chrome, or Firefox.

Clear Browser Cache and Try a Different Browser

Alternative Method: You can also try opening a private or incognito window in your browser to sign in. This temporarily bypasses existing cookies.

Solution 2

Verify Microsoft Service Health and Contact Support

If local troubleshooting fails, the issue may be a temporary server-side outage from Microsoft.

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Frequently Asked Questions

What causes Error 500 in Microsoft Bookings?

Error 500 is a generic server error often caused by corrupted browser cookies, authentication token mismatches during sign-in, or temporary backend server outages on Microsoft's end.

Will clearing my browser cache delete my Bookings data?

No, your Microsoft Bookings data, including schedules and customer information, is stored securely on Microsoft's servers. Clearing your browser cache only removes local temporary files and forces a fresh login session.

How do I know if Microsoft Bookings is down globally?

Microsoft 365 administrators can check the Service Health Dashboard in the Microsoft 365 admin center. End users can check Microsoft's official support channels, social media, or community forums for widespread outage reports.

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